Anthranilamide derivatives are used as the basis for a series of novel oligomers that fold into helical secondary structures in the solid state. When combined with pyridine-2,6-dicarboxylic acid and 4,6-dimethoxy-1,3-diaminobenzene subunits, oligoanthranilamides can be induced to take up a coiled conformation corresponding to two turns of a helix. X-ray crystallography shows that intramolecular hydrogen bonding and π-π stacking interactions are important in stabilizing the extended helical structures. Furthermore, both experimental and calculated 1H NMR methods indicate that related conformations are taken up by the oligomers in chloroform solution.
ASJC Scopus subject areas
- Colloid and Surface Chemistry